Display screen or portion thereof with icon



FIG. 1 is the front view of a display screen or portion thereof withicon showing our new design; and,

FIG. 2 is another front view of FIG. 1 in a different environment.

The broken lines in the drawings depict a display screen or portionthereof and form no part of the claimed design.

CLAIM The ornamental design for a display screen or portion thereof withicon, as shown and described.